ARCHIVED: Jen Easterly @CISAJen
Archived: Director, CISA—America’s Cyber Defense Agency. Combat Veteran. Proud Mom. Rubik’s Cuber. Aspiring Electric 🎸. ❤️/RT ≠ endorsement cisa.gov Washington, DC Joined July 2021-
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Today, CISA and @FBI published our updated Product Security Bad Practices guide, revised based on input from over 75 public comments. We urge every software manufacturer to review and implement this guidance to foster safe security outcomes: go.dhs.gov/UxS
🎉 @CISAJen and other senior leaders proudly honored more than 200 team members at our annual Workforce Recognition Awards! We’re thrilled to celebrate those who exemplify excellence and dedication in advancing our mission. Congrats to all! 🎊 #WorkforceAwards
Had a BLAST talking with my friend @MarkCMontgomery about the evolving cyber threats & how @CISAgov is tackling them with public & private sector partners. While bittersweet (this was my last public event), I take immense pride in the work CISA does to keep our nation safe.
Snow’s falling, hot cocoa’s calling, and hackers are stalling (hopefully). Don’t let them crash your cozy vibes: 🔒 Turn on MFA 📧 Double check email links before you click 📲 Update your software cisa.gov/secure-our-wor…
On #WearBlueDay💙myself and the rest of the @CISAgov team stands with @DHSBlueCampaign to raise awareness about human trafficking, support survivors, and work to prevent exploitation. Learn more: go.dhs.gov/ZSX
The Cybersecurity Performance Goals (CPG) Adoption Report provides key findings from the program’s nearly two-year period: cisa.gov/resources-tool… See how the CPGs can help your organization strengthen its security posture: cisa.gov/CPG
Start the year fresh! Create strong passwords for each account that are long, random and unique. Use a password manager to create and save them for you. Your accounts will thank you! Learn more: cisa.gov/secure-our-wor…
Today we honor the remarkable life and legacy of President Carter—a lifelong public servant, fierce champion of human rights and peace, and honorable leader who changed our world for the better. Thank you, President Carter, for your unwavering dedication and lasting impact.
#Ivanti released security updates to address CVE-2025-0282—being actively exploited—and CVE-2025-0283, affecting Connect Secure, Policy Secure, and ZTA Gateways. See our Alert for mitigation guidance to help reduce your exposure: bit.ly/4fYrMqQ
Join WiCyS for a special fireside chat with Jen Easterly, Director of CISA, and Lynn Dohm, WiCyS Executive Director! They'll dive into the “50 by 30” initiative and milestones shaping a more inclusive cybersecurity future. Don’t miss it – ow.ly/EWOn50UzVbo
For the past decade, our CDM program has grown into a vital initiative, delivering innovative tools to safeguard government systems. Explore how CDM has expanded its capabilities and partnerships to meet today’s evolving cyber challenges. youtube.com/watch?v=ysYdSx…
We released new voluntary cybersecurity performance goals for the IT and product design sector. Aligned to Secure by Design principles, we encourage product developers to adopt these goals to significantly improve software security: go.dhs.gov/UHY
#DYK there are over 700,000 open cybersecurity positions in the US, including 7,000+ in the federal government? If you’re ready for a career change in the new year, check out @CISAgov's new CISA Learning system to build or refresh your skills: go.dhs.gov/Uh7
🌍 Thank you to our #JointCyberDefenseCollaborative partners for helping to build a safer digital world in 2024. Here’s to a secure, resilient, and collaborative 2025! Happy New Year!🎊 🎆
If you’re digging out of a post-holiday email avalanche like me, remember, don’t click on anything suspicious. Phishing scams love this time of year! 📧🚨
DHS wishes all who observe a happy and prosperous Kwanzaa. May your celebrations be filled with hope, peace, and light.
🕎 Happy Hanukkah to all celebrating the Festival of Lights this season. May your holiday be filled with peace, joy, and community.
🎁🎄Merry Christmas from DHS! We wish all who celebrate a joy-filled holiday. A special thank you to the dedicated, hardworking members of our #DHSWorkforce on the job keeping our communities safe this holiday season. #WeAreDHS
If you’re unsure about a strange message, website or app, think twice before sharing your financial information. 🚫There could be a holiday grinch on the other end of the screen! Get tips for the whole family at cisa.gov/SecureOurWorld #SecureOurWorld
Treat your friends to our newest #SecureOurWorld animated video series. They’ll have so much fun they won’t even realize they’re learning how to be safe online. Find it on YouTube -> youtube.com/playlist?list=…

Jake Williams @MalwareJake
143K Followers 2K Following Breaker of software | VP R&D @hunterstrategy | CTI/DFIR | @ians_security faculty | Bookings: jake at malwarejake dot com | GSE #150 | He/him
meg west @cybersecmeg
152K Followers 936 Following Tweets about #dogs & travel & fitness & cybersecurity, oh my! Opinions are my own. 📧: [email protected]
💻 Sherrod DeGrippo... @sherrod_im
36K Followers 7K Following Weird security voyeur. Vibe merchant. CISO of your 🩷 Official USPS fan account. 🎉 Host of THE Microsoft Threat Intelligence Podcast. I like crime actors.
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58K Followers 2K Following I accidentally became the CISO. I didn't want this job, but the job chose me. I'm scared, and I want to go home.
Cybersecurity and Inf... @CISAgov
309K Followers 100 Following Official communications from CISA on X will always originate from this account. No other accounts are authorized to convey info from CISA or senior CISA staff.
Justin Elze @HackingLZ
65K Followers 5K Following CTO @TrustedSec | Former Optiv/SecureWorks/Accuvant Labs/Redspin | Race cars
4n6lady @4n6lady
62K Followers 669 Following #DFIR & #BlueTeam | IR & Threat Detection | #OSINT enthusiast | waiting for HL3 | AWS CIRT - my views are my own
Lina @d0rkph0enix
38K Followers 10K Following Infosec dork, boxer, poker player, dog owner/operator, spiller of things. Cars, vidya games, and cooking are my jam. #ChiefsKingdom and Royals fanatic. #SecKC
Katie Nickels @likethecoins
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Ray [REDACTED] @RayRedacted
64K Followers 8K Following Hacker, Researcher, Podcast Producer (Tribe of Hackers, Darknet Diaries). Proud dad of the fastest climber in the world. Ever. “Ut scandis, alios subleva”
Nicole Beckwith @NicoleBeckwith
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InfoSecSherpa 🏔️ @InfoSecSherpa
51K Followers 4K Following #Librarian 📚 to #InfoSec 🤖 #Philly area hoagie mouth 🥨#Ginfosec 🍸 #Everton ⚽️ Your guide up a mountain of information! 🏔️ #GoBirds
Kim Zetter @KimZetter
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Bryson 🦄 @brysonbort
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strandjs - strandjs@b... @strandjs
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U.S. Army Cyber Schoo... @ArmyCyberSchool
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Lesley Carhart @hacks4pancakes
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Tanya Janca | Shehack... @shehackspurple
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John Hultquist @JohnHultquist
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NexusFire👹 @NexusFireX
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Priya Bhatt @SunoOpriya
193 Followers 520 Following 🤝 I build tech communities, make events fun & talk about cybersecurity.
Stephanie Gardner @S_gardnerARTIST
456 Followers 4K Following
PossumSec @Possum_Sec
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Dr Frank Williams @FrankWilliams1j
51 Followers 404 Following
Darren @dabear1981
166 Followers 1K Following
Adam Robinson @IAmAdamRobinson
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ZeroTek | Okta for MS... @ZeroTekOkta
3 Followers 397 Following ZeroTek is the MSP-first way to succeed with Okta. ZeroTek’s month-to-month model reduces risk and lets you land clients fast, then expand at your own pace. 🚀
Ridley Lim @LimRidley
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deweyj @deweyj1
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TessEleanor @1bWYy961D25ABOe
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Aupaleani @aupaleani35066
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Aaron @AaronTechFix
16 Followers 26 Following
Ben Gibbs @bobop
399 Followers 486 Following Dad, Husband, Franciscan, Application Security Engineer at @JaneRunsClinics
AUM @A_U_M_USER
0 Followers 34 Following
Not For Sale @melissawhat
5 Followers 253 Following Wow………………………..……………….……………………………………………………………………………………..……………………………….....………….........….....................…..…....I’m going to the store ya’ll want anything?
Ron Mexico @RonaldMexiconld
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Charpoh Dehm @charpoh_dehm99
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Jerqi @Jerqi534
51 Followers 1K Following
elFamoso @0xf2258f_fr
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1 Followers 62 Following
Damionw @Damionw
619 Followers 2K Following Principal SecEng looking for next cool startup, Organizer of PhillyDevOps, PhillySec meetups & DevOpsDays Philly, BSides Philly confs. Martial arts instructor.
Zafar Khan @zdkhan1
152 Followers 556 Following Global CEO @ RPost - Global leader in e-signature and cybersecurity services 190+ countries 🌏🛡️ Offshore Yacht Racer ⛵ #RPost #LA #CEO #CyberSecurity
Jayden Rubin @rubi73641
34 Followers 433 Following Cybersecurity Engineer | Analyst | Problem-solver. Design secure networks, respond to breaches, train teams. Obsessed with beating emerging threatsa
Md Jawaid Alam @JawaidBgp816
1K Followers 3K Following हालात ! शहर के देखकर ग़म का इज़हार मत कर, नमाज़-ए-फ़ज्र बतायगी के मदद मांगने वालों की तादाद कितनी है..!!!
Mirhui @Mirhui66135
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Margaret N. Grayson @MargaretMarkets
20K Followers 12K Following Full-Time Trader | Christian | American 🇺🇸 | 16-Figure Portfolio | Mentor to 370+ Students | Believer in #Bitcoin | Helping People Grow Wealth
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kyaw san @san_kyaw70785
1 Followers 44 Following
Pete Heinle @HeinlePete
10 Followers 34 Following
ganeshrouth @ganeshrouth8
4 Followers 63 Following
Emrullah CAN @Ewrnlleh
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明天 @mngtin24986
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Lucian Fogoros @fogoros
31K Followers 2K Following Co-Founder https://t.co/KwXjxubObe Advisory Board Cleveland State University Computer Eng. #IIoT #AI #ML #CxO #IndustrialTransformation #ICSCybersecurity #AR
Jake Williams @MalwareJake
143K Followers 2K Following Breaker of software | VP R&D @hunterstrategy | CTI/DFIR | @ians_security faculty | Bookings: jake at malwarejake dot com | GSE #150 | He/him
Cybersecurity and Inf... @CISAgov
309K Followers 100 Following Official communications from CISA on X will always originate from this account. No other accounts are authorized to convey info from CISA or senior CISA staff.
Katie Nickels @likethecoins
55K Followers 3K Following Director of Intel at @redcanary. SANS Certified Instructor for FOR578: CTI. Senior Fellow at @CyberStatecraft. She/her. Mastodon: @[email protected]
Ray [REDACTED] @RayRedacted
64K Followers 8K Following Hacker, Researcher, Podcast Producer (Tribe of Hackers, Darknet Diaries). Proud dad of the fastest climber in the world. Ever. “Ut scandis, alios subleva”
Bryson 🦄 @brysonbort
19K Followers 496 Following 🦄 @scythe_io @grimmcyber, Sr Advisor @IST_Org, NatSec Inst Sr Fellow, Co-Fdr @ICS_Village, @c2_matrix co-creator, USMA Science Board, Angel Investor, US Army
John Hultquist @JohnHultquist
29K Followers 1K Following Chief Analyst, Google Threat Intelligence Group. @CYBERWARCON and @SLEUTHCON founder. Johns Hopkins professor. Army vet.
Phillip Wylie @PhillipWylie
52K Followers 20K Following xIoT Security Evangelist @phosphorusinc | Offensive Security Expert | Phillip Wylie Show Podcast Host @thehackermaker | @pentesterblue coauthor
CISA Cyber @CISACyber
286K Followers 71 Following Part of @CISAgov, we respond to major incidents, analyze threats, and exchange critical cybersecurity information with partners around the world.
Jabs @CyberSnark
10K Followers 5K Following OT Cybersecurity Lead @STVGroup. Nonresident Fellow @AtlanticCouncil. Adjunct Professor. Advisor. Sanity evangelist. For Mt. Weather.
Andy Greenberg (@agre... @a_greenberg
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Women in CyberSecurit... @WiCySorg
25K Followers 267 Following A nonprofit organization focused on recruiting, retaining & advancing women in cybersecurity.
Thomas Rid @RidT
52K Followers 196 Following Author of ACTIVE MEASURES, RISE OF THE MACHINES, CYBER WAR WILL NOT TAKE PLACE, "Attributing Cyber Attacks," more. Johns Hopkins, Alperovitch Institute.
Brett Callow @BrettCallow
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Lynn Dohm | WiCyS ♥... @lynn_dohm
4K Followers 1K Following Executive Director of Women in CyberSecurity (WiCyS).
Mike Waltz @michaelgwaltz
208K Followers 3K Following 32nd U.S. Ambassdor to the UN; 29th NSA; Fmr Congressman from FL; Colonel (ret) U.S. Army Green Beret; Author “Hard Truths” Fmr CEO; Proud Husband & Father 🇺🇸
Alyssa Farah Griffin @Alyssafarah
152K Followers 1K Following @TheView Co-Host, CNN Political Commentator. Prior: @WhiteHouse, Pentagon, & Cap Hill. Was a career Spox, these are my words.
Bret Baier @BretBaier
1.7M Followers 9K Following Chief Political Anchor @FoxNews. Anchor & Executive Editor of @SpecialReport 6-time NYT bestselling author-“To Rescue The American Spirit” out 10/21/25
Troy Hunt @troyhunt
241K Followers 1K Following Creator of @haveibeenpwned. Microsoft Regional Director. Pluralsight author. Online security, technology and “The Cloud”. Australian.
Wendy R. Anderson @wendyranderson
11K Followers 5K Following #NatSec & #DefenseTech Exec | @DeptofDefense alum | ex-Palantir | RT ≠ endorsements
Shirley Bloomfield @sbloomfield15
4K Followers 821 Following Chief Executive Officer of NTCA–The Rural Broadband Association (@NTCAconnect). Advocate for #rural #broadband. Views are my own.
Larry Sabato @LarrySabato
199K Followers 36K Following Director, UVA @Center4Politics. Author, The Kennedy Half Century https://t.co/JYUokVHxEZ. Read the Crystal Ball every week: https://t.co/zPYuO6A8f9
Blake Hall @Blake_Hall
25K Followers 904 Following Founder & CEO of https://t.co/rlteLqhtTe Army Veteran. American. Live free or die.
Deviant Ollam ツ @deviantollam
45K Followers 997 Following Stalwart defender of Oxford commas, two spaces after a period, and ellipses. When they ask how I died, tell them... still happy. (he/they)
Jennifer Pahlka @pahlkadot
37K Followers 3K Following Author of Recoding America Fellow at @NiskanenCenter, Advisor to Abundance Network Formerly @CodeforAmerica @USDS @USDResponse Defense Innovation Board
Karol Molenda @MolendaKarol
12K Followers 376 Following Dowódca Komponentu @CyberWojska | były Dyrektor Narodowego Centrum Bezpieczeństwa Cyberprzestrzeni #NCBC. #cyber #IT #krypto
æva black @aevavoom
4K Followers 941 Following Hacker, opensource geek, public speaker, advocate. Currently works at CISA. All opinions = 💯 mine. || moved to bluesky
mRr3b00t @UK_Daniel_Card
114K Followers 8K Following Department of Cyber WAR CEO of everyone's email servers!
cje @caseyjohnellis
29K Followers 4K Following troublemaker & troubleshooter | founder @bugcrowd @disclose_io, board advisor, investor | pioneer of #bugbounty as-a-service | opinions CC0 1.0 | #hacktheplanet
West Point Dean @DeanUsma
7K Followers 334 Following Official account of USMA's Dean of the Academic Board, Brigadier General Shane Reeves. Following, RTs and links ≠ endorsement
Jack Cable @jackhcable
14K Followers 924 Following Ethical hacker. CEO & Co-founder @CorridorSecure.
merryl goldberg @merrylgoldberg
216 Followers 479 Following Professor at Cal State San Marcos Music and Arts Integration professional saxophonist - Klezmer Conservatory Band; mom, daughter, partner, and boxer :-)
Lisa Damour, PhD @LDamour
15K Followers 890 Following Mom. Psychologist. Creator: Untangling 10to20. Author of 3 NYT bestsellers for parents. Co-host: @AskLisaPodcast. Contributor: @UNICEF @NYTimes @CBSMornings.
John Hammond @_JohnHammond
300K Followers 3K Following Cybersecurity Researcher @HuntressLabs || Just Hacking Training @JustHackingHQ w/ @ethicalhacker || https://t.co/UtsNJiyQtS || https://t.co/narO3sz7y6
Lily Hay Newman @lilyhnewman
13K Followers 3K Following Security reporter @WIRED. she/her/my man. Well of course, everything looks bad if you remember it. Signal +1 (347) 722-1347 @[email protected]
Confidence Staveley @sisinerdtweets
41K Followers 1K Following Multi-Award Winning #Cybersecurity Leader & Int’l Speaker. Founder @cybersafehq | Author - API Security for White Hat Hackers.
Royal Hansen @royalhansen
8K Followers 1K Following Vice President, Engineering, Google - Privacy, Safety, Security: Posts on InfoSec, Privacy, Data, AI, Counter Abuse and random stuff from life in CA; Tweets=own
Daniel Cuthbert @dcuthbert
32K Followers 2K Following Documentary photographer, old creaky hacker. Co-author of @OWASP ASVS standard. Blackhat/Brucon Review Board & Co_chair UK Gov Cyber Security Advisory Board
David Weston (DWIZZZL... @dwizzzleMSFT
25K Followers 2K Following Corporate Vice President, OS Security and Enterprise @Microsoft
Michelle Zatlyn @zatlyn
21K Followers 5K Following I enjoy building products people love. Young Global Leader '14. Co-founder, President + COO Cloudflare (NYSE: $NET)
Tom Costello @tomcostellonbc
24K Followers 339 Following NBC NEWS Senior Correspondent covering Aviation, Space/NASA, Econ & Cybersecurity for @TODAYshow @nbcnightlynews. Hometown - Denver. #GoBuffs
Margaret Brennan @margbrennan
139K Followers 5K Following Face the Nation Moderator, CBS Chief Foreign Affairs Correspondent, Boy Mom & USMC wife, UVA alum, CSH grad, CT Yankee & Sag Harbor native, retired 🇮🇪 dancer
Chris Krebs @C_C_Krebs
232K Followers 3K Following
craig newmark @craignewmark
89K Followers 5K Following craigslist founder & CSR, not management since 2000, https://t.co/MgiGNQGJ9H
Rachel Tobac @RachelTobac
108K Followers 8K Following Friendly Hacker & CEO @SocialProofSec security awareness/social engineering prevention Training, Videos, Talks | 3X @DEFCON🥈| Board @WISPorg | Ex @CISAgov TAC
Dr. Tarika Barrett @DrTarikaBarrett
5K Followers 752 Following CEO @GirlsWhoCode. Educator, Activist, Craft whiz, Party and cake boss, Mom to two lovely kids and our pup Miki. She/Her
Nicole Perlroth @nicoleperlroth
87K Followers 6K Following told the story of cyber; now working to change the story of cyber
Jeff Moss @thedarktangent
106K Followers 7 Following https://t.co/fgXNGNt7gm Abandoned this site in 2022 but hopeful for the future of social media. Consider migrating to DEFCON.socal
Garrett M. Graff @vermontgmg
93K Followers 7K Following Journalist & Historian. Dir, @aspencyber. Contributor, @WIRED. Leadership Columnist @postopinions; Fmr ed, @PoliticoMag. garrett.graff AT gmail OR ProtonMail.